GE Discovery NM/CT 630 vs GE Discovery NM/CT 670
GE's Discovery NM/CT 630 and NM/CT 670 are the two most popular dual-head SPECT/CT platforms on the refurbished market. They share the same Optima CT base but differ in cardiac-specific imaging, automation and software ecosystem.
Side-by-side specifications
| Specification | Discovery NM/CT 630 | Discovery NM/CT 670 |
|---|---|---|
| Detector heads | Dual-head NaI | Dual-head NaI |
| CT | 16-slice Optima CT | 16-slice Optima CT (CT 540) |
| Cardiac SPECT | Standard | Enhanced (Pro / CZT options) |
| Bore size | 70 cm | 70 cm |
| Collimators | LEHR, MEGP, HEGP | LEHR, MEGP, HEGP, fan-beam |
| Typical year | 2014–2020 | 2014–2022 |
| Typical refurb price (2026) | $150,000 – $280,000 | $200,000 – $380,000 |
Clinical positioning
The Discovery NM/CT 630 is GE's all-purpose dual-head SPECT/CT — strong for general nuclear medicine, oncology, bone, thyroid and renal studies with attenuation-corrected CT localization.
The Discovery NM/CT 670 builds on the same platform with enhanced cardiac SPECT, additional collimator options and broader automation — a better fit for high-volume cardiology programs and clinics that need fan-beam collimation for brain studies.
Which to buy?
If your case mix is general nuclear medicine with occasional cardiac, the Discovery NM/CT 630 delivers excellent value. If you run dedicated cardiac SPECT or need fan-beam collimation, step up to the NM/CT 670.
Frequently asked questions
- What is the difference between the GE Discovery NM/CT 630 and 670?
- Both are dual-head NaI SPECT/CT systems with a 16-slice Optima CT. The NM/CT 670 adds enhanced cardiac SPECT, fan-beam collimator support and additional automation, while the NM/CT 630 is the all-purpose general nuclear medicine configuration.
- How much does a refurbished GE Discovery NM/CT 630 cost?
- In 2026 a refurbished GE Discovery NM/CT 630 typically sells between $150,000 and $280,000 depending on year, CT slice count, collimator package, software and installation scope.
- Is the NM/CT 670 worth the price premium?
- For high-volume cardiac SPECT programs or labs that need fan-beam collimation, yes — the additional clinical capability and automation pays back quickly. For general nuclear medicine, the NM/CT 630 is the better value.
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